Analgesic Effects of Intra-Articular Bupivacaine/Intravenous Parecoxib Combination Therapy versus Intravenous Parecoxib Monotherapy in Patients Receiving Total Knee Arthroplasty: A Randomized, Double-Blind Trial

Table 3

Postoperative pain score during the first 24 hours.

	NRS score	Time (hours)
		POR	4	8	12	16	20	24
Control group ()	0–3	2	3	2	5	7	4	0
	4–6	1	1	6	6	6	6	6
	7–10	13	12	8	5	3	6	10
Bupivacaine group ()	0–3	10	5	6	8	8	10	8
	4–6	5	11	12	11	11	7	10
	7–10	5	4	2	1	1	3	2

Numeric rating scale (NRS) scores were divided into 3 groups: mild (NRS score: 0–3), moderate (NRS score: 4–6), and severe (NRS score: 7–10). POR: postoperative room.